Author:
SUMNER D.,PRICE S. J.,PAÏDOUSSIS M. P.
Abstract
The flow around two circular cylinders of equal diameter, arranged in a staggered
configuration, was investigated using flow visualization and particle image velocimetry
for centre-to-centre pitch ratio P/D = 1[ratio ]0 to 5.0 and angle of incidence. α = 0°
to 90°. Experiments were conducted within the low subcritical Reynolds number
regime, from Re = 850 to 1900. Nine flow patterns were identified, and processes of
shear layer reattachment, induced separation, vortex pairing and synchronization, and
vortex impingement, were observed. New insight was gained into previously published
Strouhal number data, by considering the flow patterns involved. The study revealed
that vortex shedding frequencies are more properly associated with individual shear
layers than with individual cylinders; more specifically, the two shear layers from the
downstream cylinder often shed vortices at different frequencies.
Publisher
Cambridge University Press (CUP)
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics
Cited by
298 articles.
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